Increase LOCKDEP_CIRCULAR_QUEUE_BITS to avoid this warning:
------------[ cut here ]------------
lockdep bfs error:-1
WARNING: kernel/locking/lockdep.c:2103 at print_bfs_bug+0x20/0x40 kernel/locking/lockdep.c:2103, CPU#1: syz-executor189/17458
Modules linked in:
CPU: 1 UID: 0 PID: 17458 Comm: syz-executor189 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:print_bfs_bug+0x22/0x40 kernel/locking/lockdep.c:2103
Code: 90 90 90 90 90 90 90 90 55 53 89 fb e8 87 91 27 03 89 c5 e8 e0 85 ff ff 85 ed 74 13 83 fb ff 74 16 48 8d 3d f0 db 12 0e 89 de <67> 48 0f b9 3a 5b 5d e9 42 6c b8 09 cc 48 c7 c7 c7 43 a5 8d e8 75
RSP: 0018:ffffc90008e57388 EFLAGS: 00010046
RAX: 000000000000003b RBX: 00000000ffffffff RCX: c1c5e0c02b4e3300
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8fb50900
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520011cae21 R12: 0000000000000017
R13: ffffffff9352f688 R14: ffffffff96426328 R15: ffffffff96426398
FS:  00007fada75216c0(0000) GS:ffff888125cce000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fada7500d58 CR3: 0000000026470000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 check_irq_usage kernel/locking/lockdep.c:-1 [inline]
 check_prev_add kernel/locking/lockdep.c:3213 [inline]
 check_prevs_add kernel/locking/lockdep.c:3328 [inline]
 validate_chain kernel/locking/lockdep.c:3952 [inline]
 __lock_acquire+0x25ed/0x2de0 kernel/locking/lockdep.c:5288
 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942
 seqcount_lockdep_reader_access+0x55/0x100 include/linux/seqlock.h:73
 ktime_get+0x45/0x220 kernel/time/timekeeping.c:1002
 clockevents_program_event+0x290/0x630 kernel/time/clockevents.c:363
 hrtimer_rearm kernel/time/hrtimer.c:2169 [inline]
 __hrtimer_rearm_deferred+0x37e/0x4d0 kernel/time/hrtimer.c:2189
 hrtimer_rearm_deferred_tif include/linux/hrtimer_rearm.h:58 [inline]
 hrtimer_rearm_deferred include/linux/hrtimer_rearm.h:67 [inline]
 irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:505 [inline]
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:542 [inline]
 irqentry_exit+0x8d3/0x910 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 b0 f5 b4 09 f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 e2 50 03 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 ff c9 b8 09 cc 48 8d 3d a7 33 13
RSP: 0018:ffffc90008e577e8 EFLAGS: 00000286
RAX: c1c5e0c02b4e3300 RBX: 0000000000000001 RCX: 0000000000000046
RDX: ffff888037c92b80 RSI: ffffffff8db3e2bd RDI: ffffffff8bcc2a80
RBP: ffff888037c91f40 R08: 0000000000000008 R09: ffffffff95cbfc30
R10: 00000000c4f5d98d R11: 0000000091755122 R12: ffff888039d4c138
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000246
 touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:4111
 __flush_workqueue+0x148/0x1470 kernel/workqueue.c:4153
 drain_workqueue+0xce/0x380 kernel/workqueue.c:4317
 destroy_workqueue+0xbb/0xc60 kernel/workqueue.c:6155
 ceph_osdc_stop+0x6b/0x3d0 net/ceph/osd_client.c:5276
 ceph_destroy_client+0x71/0x180 net/ceph/ceph_common.c:768
 destroy_fs_client+0x192/0x2c0 fs/ceph/super.c:910
 ceph_kill_sb+0x6b0/0x9b0 fs/ceph/super.c:1612
 deactivate_locked_super+0xbc/0x110 fs/super.c:603
 ceph_get_tree+0x9e4/0x1a40 fs/ceph/super.c:1380
 vfs_get_tree+0x92/0x2a0 fs/super.c:1947
 vfs_cmd_create+0xa2/0x200 fs/fsopen.c:231
 __do_sys_fsconfig fs/fsopen.c:463 [inline]
 __se_sys_fsconfig+0x6bf/0x810 fs/fsopen.c:350
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fada7549159
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fada75211d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007fada75f9b48 RCX: 00007fada7549159
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004
RBP: 00007fada75f9b40 R08: 0000000000000000 R09: 31203a6b63617473
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fada75f9b4c
R13: 00007fada75cb378 R14: 0000200000000280 R15: 0000200000000b40
 </TASK>
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	55                   	push   %rbp
   9:	53                   	push   %rbx
   a:	89 fb                	mov    %edi,%ebx
   c:	e8 87 91 27 03       	call   0x3279198
  11:	89 c5                	mov    %eax,%ebp
  13:	e8 e0 85 ff ff       	call   0xffff85f8
  18:	85 ed                	test   %ebp,%ebp
  1a:	74 13                	je     0x2f
  1c:	83 fb ff             	cmp    $0xffffffff,%ebx
  1f:	74 16                	je     0x37
  21:	48 8d 3d f0 db 12 0e 	lea    0xe12dbf0(%rip),%rdi        # 0xe12dc18
  28:	89 de                	mov    %ebx,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	5b                   	pop    %rbx
  30:	5d                   	pop    %rbp
  31:	e9 42 6c b8 09       	jmp    0x9b86c78
  36:	cc                   	int3
  37:	48 c7 c7 c7 43 a5 8d 	mov    $0xffffffff8da543c7,%rdi
  3e:	e8                   	.byte 0xe8
  3f:	75                   	.byte 0x75